Update FindVulkan.cmake
As of at least 1.0.42 of the LunarG SDK, the vulkan-1.lib file for windows is stored in ${VULKAN_SDK}/Lib or ${VULKAN_SDK}/Lib32
As of at least 1.0.42 of the LunarG SDK, the vulkan-1.lib file for windows is stored in ${VULKAN_SDK}/Lib or ${VULKAN_SDK}/Lib32